Baffle-wall block



I J. A. M ow LL BAFFLE WALL BLocK Filed April 9, 1926 a f 4 55? z z Patented is. 31, 1926.

' UNE'EEQ stares Jenn A. vr povvnnp, or s'r. pours, arrssounr.

opposite faces of the block to form laps,so

that when a plurality of such blocks are assembled to form the said bafile wall between the water tubes, the semi-circular'cutouts will embrace and surround in a lateral.

direction adjacent water tubes, while the beveled edges of the blocks will vertically overlap .one another.

Another object is to provide a battle wall block .or tile having semi-circular cut-outs at opposite edges adapted to-embrace the water tubes of the boiler for the purpose of forniinga complete ibaffie wall .with a plurality of such blocks, the said semicircular edges of each block being lined .or coated with a fusible substance such as pitch, tar or-wax, to the end that after the baiile wal-l'is completed, theheat within the boiler may fuse and melt away the said fusible lining, leaving slight clearance spaces between the edges of the blocks and the water tubes, the said clearance spaces serving to facilitate the removal and replacement of the water tubes without damaging the said baflle wall.

- Another object is to provide a battle wall block or tile having two opposite edges thereof beveled off at opposite faces of the block, so that when a plurality of such blocks are assembled for completing a bailie wall transversely of. the water tubes of a boiler, the said blocks will overlap one another vertically, in a shingle-like relation, to the end that by building two such walls in parallel spaced relation, with the laps of the blocks directed inwardly from top to bottom, a plastic clay or other viscous material may be filled in between the two walls from the top, for the purpose of completing a continuous solid structure, without danger of the plastic filler working out laterally between the blocks, and water tubes of the boiler.

In the drawing- Figure 1 is a side view of one of the tiles or blocks; 7

Figure 2 is an edge view of the same;

Figure 3 is a sectional view of a portion BAFFLE-VIALL encore,- Application filed. Aprilfi, 19 26, Serial no. 191,008.

of a battle wall -constr-ucted of this form of= block or"-tile,'including a sectional View of several water tubes extended through the wall. v

Figure 4: is an edge view showing the bevel of the laps reversed as to the form shown in FigureQ.

This invention consists simply in the tile 1, having the semi-circular cut-outs 2 at opposite edges thereof, and having the other two opposite edges beveled off at opposite faces of the tile, as shown at 8 and d The cut-outs 2 are adapted to form laps. to laterally engage the water tubes 5 and half encircle the same, when the tile is positioned transversely between the said tubes, and of course the tile is inadeof just the right dimensions to span the horizontal and vertical distances between the tubes, filo formed, a plurality'of such tiles may mounted in place one over the other from top to bottom of the alleys between the water tubes, with the beveled edges of the tiles vertically overlapping each other shown at :6 in Figure 3, thereby forming a complete battle wall .or shell 7. lwo of such walls or shells 7 may be constructed i parallel spaced relation, with the lower laps 3 of each successive tile fromtop to bottom, directed inwardly and overlapping the upper laps 4 of the next lower tiles; and any desired viscous or plastic filler (not shown) may then be poured in at the top of the structure and allowed to flow down and fill the spaces between the two said shells. Owing to the inwardly directed,

overlapping relation of the tiles, the plastic filler will not work out between the .tiles. 'Of course, the tiles should be accurately positioned in parallel transverse planes, and the battle walls may be built perpendicularly to the tubes or they may be inclined from top to bottom, relative to the tubes, as shown in Figure 3. In the latter event the edges of the semi-circular cut-outs 2 would of course be correspondingly inclined at top ries. 4

without crowding too closely upon the walls of the tubes. when the tiles are mounted in position. With the tiles so coated at the edges embracing the tubes, theheatpassing through the boiler would serve to fuse or 'melt the said fusible coatings after the baffie walls were in operation, and thus clearance spaces would be leftbetweenthe edges of the tiles and the walls of the tubes, which spaces would be ofuse' in facilitating the removal and relnsertion of -wa't'er tubes Without disturbing or injuring thefsaidbaf:

"fie walls.

-While I have herein"described a-gcertain specific manner and-method of constructing and assembling the elements ofmyinven-V tion, it is understood that Imay vary from *the same, in .minor details, notdeparting? from the spirit of myin-v'ention, so as best to construct apractical device for the purpose intended, ,as'defined' in the appended claims.

In order to facilitate theuse of the form of tile referred to herein, in the building or repair of baffle. walls as described, I have designed a special tool for handling and in-,

serting the tiles in place in the wall, which tool is. the subject matter of a separate applieation for patent.

wI- claim:-* 1 1 a 1. In combination with the watertubesof a boiler, a baffle tile for mounting transversely therein between, the said tile hav' ing, arcuate 'cu't-outs'at .two ofits opposite edges to laterally engage adjacent water tubes, the said cut outsbeing lined with fusible coatings;

2. In combinat on with the Water tubes of a boiler, a battle tile for mounting transversely therein between, the said tile having 40 arcuate cut-outsat two of its opposite edges and having its other two opposite and parallel edges beveled off at the opposite faces of the tile to form laps; the said cut-outs being lined with a fusible substance and b- 1 ing (adapted to laterally engage adjacent water tubes, the said laps being adapted to vertically engage T and overlap similar laps of the tiles'positioned common plane.

i, ,50 l 3; The method ofconstructing two walls in-spaced parallel relation across a bank of boiler tubes for the purpose of placing a V plastic, siccative 'mat'erial therebetween without danger of the plastic material worka ing' out between the" blocks. composingthe I wall andthe tubes; the said method consist ing' in providing a plurality oftiles having adapted to vertically e a andioveflap similar laps of adjacent tiles, then lining the said arcuate cut-outs with a fusible substance; 'and 'then building the said spaced walls with the said tiles.

In testimony whereof I aflix my signature. 7

JOHN 'A.. MAoDOWELL'.

above and below infra 

